Non-computing applications of quantum information in NMR     

Steffen J. Glaser  Thomas Schulte-Herbrüggen  Navin Khaneja 《Informatik - Forschung und Entwicklung》2006,35(4):65-71

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Sammelrezension: Unsicherheit — Chancen und Risiken der Generalisierung     

Steffen Hillmert 《Zeitschrift für Erziehungswissenschaft》2005,8(2):321-325

Ohne Zusammenfassung  相似文献   

Vereinssport-Sozialisation im Zeichen des Nationalsozialismus     

Steffen Bahlke  Klaus Cachay 《Sportwissenschaft》2002,32(2):170-190

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Fachdidaktisches Wissen von Lehrkräften und multiple Ziele im naturwissenschaftlichen Sachunterricht     

Dr. Kim Lange  Dr. Thilo Kleickmann  Dipl. Psych. Steffen Tröbst  Prof. Dr. Kornelia Möller 《Zeitschrift für Erziehungswissenschaft》2012,15(1):55-75

Recent investigations in the field of mathematics have demonstrated that teachers’ pedagogical content knowledge, as a central component of teachers’ professional knowledge, plays a significant role in high-quality instruction and students’ learning gains. The study presented here explores the significance of teachers’ pedagogical content knowledge for gains in pupils’ understanding of scientific concepts and for motivational and self-related outcome criteria in primary science education in Germany. It reports on findings from a study with a pre-post-design comprising 60 primary school teachers and their 1326 pupils. Teachers’ pedagogical content knowledge and pupils’ learning gains as well as motivational and self-related outcome criteria were directly assessed with paper-and-pencil tests. Two-step models controlling for several relevant variables at the individual and the class level were specified. Results revealed a substantial positive effect of the measured pedagogical content knowledge on pupils’ achievement gains as well as on pupils’ situational interest and perceived competence.  相似文献   

Bildungsentscheidungen und Unsicherheit     

Dr. Steffen Hillmert 《Zeitschrift für Erziehungswissenschaft》2005,8(2):173-186

Zusammenfassung In gesellschaftlichen wie sozialwissenschaftlichen Diskussionen rücken Ph?nomene der Unsicherheit zunehmend ins Blickfeld, auch in Bezug auf das Bildungsverhalten. Allerdings ist das Themenfeld Unsicherheit sehr heterogen. Der vorliegende Beitrag liefert einen überblick über ausgew?hlte soziologische Zusammenh?nge mit Unsicherheiten im Rahmen von Bildungsprozessen und -entscheidungen. Hierfür wird zun?chst auf Grundelemente theoretischer Modelle der Bildungsentscheidung zurückgegriffen, die zur schematischen Erkl?rung sozialer Unterschiede im Bildungsverhalten verwendet worden sind. Daran anknüpfend werden Erweiterungen diskutiert, mit deren Hilfe die Bedeutung gesellschaftlicher Unsicherheiten für Bildungsverl?ufe besser erfasst werden kann. Diese Erweiterungen betreffen insbesondere die Rolle von Institutionen, die dynamische Erfassung von Lebensverl?ufen und Entscheidungsprozessen und die empirische Analyse des konkreten Entscheidungsverhaltens in sozialen Kontexten.   相似文献   

Joint kinetic determinants of starting block performance in athletic sprinting     

Adam Brazil  Timothy Exell  Cassie Wilson  Steffen Willwacher  Ian N. Bezodis  Gareth Irwin 《Journal of sports sciences》2018,36(14):1656-1662

The aim of this study was to explore the relationships between lower limb joint kinetics, external force production and starting block performance (normalised average horizontal power, NAHP). Seventeen male sprinters (100 m PB, 10.67 ± 0.32 s) performed maximal block starts from instrumented starting blocks (1000 Hz) whilst 3D kinematics (250 Hz) were also recorded during the block phase. Ankle, knee and hip resultant joint moment and power were calculated at the rear and front leg using inverse dynamics. Average horizontal force applied to the front (r = 0.46) and rear (r = 0.44) block explained 86% of the variance in NAHP. At the joint level, many “very likely” to “almost certain” relationships (r = 0.57 to 0.83) were found between joint kinetic data and the magnitude of horizontal force applied to each block although stepwise multiple regression revealed that 55% of the variance in NAHP was accounted for by rear ankle moment, front hip moment and front knee power. The current study provides novel insight into starting block performance and the relationships between lower limb joint kinetic and external kinetic data that can help inform physical and technical training practices for this skill.  相似文献   

Workaholism and work–family conflict among university academics     

Steffen Torp  Linda Lysfjord  Hilde Hovda Midje 《Higher Education》2018,76(6):1071-1090

Because of governance and management changes in universities in recent decades, the working environment of university academics has changed. The objectives of this cross-sectional study were to investigate whether university academics are more workaholic and report more work–family conflicts than other university personnel and to provide empirical knowledge about the antecedents and outcomes of workaholism and work–family conflict among university academics. A questionnaire was used to collect data on job demands, job resources, workaholism and work–family conflict from 2186 university academics and 2551 technical and administrative personnel at 3 universities in Norway. The results show that academic personnel experienced more workaholism and work–family conflict than non-academic personnel. High job demands, especially high role overload, affected both workaholism and work–family conflict. Job resources had a marginal effect on both workaholism and work–family conflict. Workaholism was positively associated with work–family conflict and partly mediated the relationship between role overload and work–family conflict. It is not clear how job demands and workaholism interact with work–family conflict. Nevertheless, paying attention to the risks of workaholism and preventing it at all levels are important, since workaholism is associated with work–family conflict, which may adversely affect the health of the individual, the family and the workplace.  相似文献   

The state of the art on Newton     

Steffen Ducheyne 《Metascience》2017,26(1):37-40

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Patterns of Instructional Discourse that Promote the Perception of Mastery Goals in a Social Constructivist Mathematics Course     

Anastasia Steffen Morrone  Shelly S. Harkness  Beatriz D'Ambrosio  Richard Caulfield 《Educational Studies in Mathematics》2004,56(1):19-38

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The Asymptotic Covariance Matrix and its Use in Simulation Studies     

Njål Foldnes  Steffen Grønneberg 《Structural equation modeling》2017,24(6):881-896

The asymptotic performance of structural equation modeling tests and standard errors are influenced by two factors: the model and the asymptotic covariance matrix Γ of the sample covariances. Although most simulation studies clearly specify model conditions, specification of Γ is usually limited to values of univariate skewness and kurtosis. We illustrate that marginal skewness and kurtosis are not sufficient to adequately specify a nonnormal simulation condition by showing that asymptotic standard errors and test statistics vary substantially among distributions with skewness and kurtosis that are identical. We argue therefore that Γ should be reported when presenting the design of simulation studies. We show how Γ can be exactly calculated under the widely used Vale–Maurelli transform. We suggest plotting the elements of Γ and reporting the eigenvalues associated with the test statistic. R code is provided.  相似文献